Bold dmarc graph labels and add emailValidated to mocker.js (canada-ca#2818)

* bold DMARC Graph Legend

* Update mocker.js

Author: EveningStarlight

frontend/mocking/mocker.js

@@ -64,6 +64,7 @@ const mockOverrides = {
         edges: [...new Array(affiliationCount)],
         totalCount: affiliationCount,
       },
+      emailValidated: true,
       preferredLang: 'ENGLISH',
     }
   },

frontend/src/DmarcReportSummaryGraph.js

@@ -266,6 +266,7 @@ function VerticalGraph({
         display="flex"
         justifyContent="center"
         fontSize="14px"
+        fontWeight="bold"
       >
         <LegendOrdinal
           scale={ordinalColorScale}
@@ -380,6 +381,7 @@ function HorizontalGraph({
         justifyContent="center"
         left={margin.left / 2 - 25}
         fontSize="14px"
+        fontWeight="bold"
       >
         <LegendOrdinal
           scale={ordinalColorScale}